linux-kernel - [PATCH v7 2/8] rtc: mt6397: refine RTC_TC

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Date:   Wed, 31 Mar 2021 19:02:01 +0800
From:   Hsin-Hsiung Wang <hsin-hsiung.wang@...iatek.com>
To:     Lee Jones <lee.jones@...aro.org>, Rob Herring <robh+dt@...nel.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>,
        Alessandro Zummo <a.zummo@...ertech.it>,
        Alexandre Belloni <alexandre.belloni@...tlin.com>,
        Sebastian Reichel <sre@...nel.org>,
        Nicolas Boichat <drinkcat@...omium.org>,
        Fei Shao <fshao@...omium.org>
CC:     Eddie Huang <eddie.huang@...iatek.com>,
        Sean Wang <sean.wang@...iatek.com>,
        Hsin-Hsiung Wang <hsin-hsiung.wang@...iatek.com>,
        Yingjoe Chen <yingjoe.chen@...iatek.com>,
        Ran Bi <ran.bi@...iatek.com>, <devicetree@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-mediatek@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>, <linux-rtc@...r.kernel.org>,
        <srv_heupstream@...iatek.com>,
        <Project_Global_Chrome_Upstream_Group@...iatek.com>,
        Yuchen Huang <yuchen.huang@...iatek.com>
Subject: [PATCH v7 2/8] rtc: mt6397: refine RTC_TC_MTH

This patch adds RTC_TC_MTH_MASK to support new chips.

Signed-off-by: Yuchen Huang <yuchen.huang@...iatek.com>
Signed-off-by: Hsin-Hsiung Wang <hsin-hsiung.wang@...iatek.com>
Acked-by: Alexandre Belloni <alexandre.belloni@...tlin.com>
---
changes since v6:
- no change.
---
 drivers/rtc/rtc-mt6397.c       | 2 +-
 include/linux/mfd/mt6397/rtc.h | 1 +
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/rtc/rtc-mt6397.c b/drivers/rtc/rtc-mt6397.c
index 6655035e5164..80dc479a6ff0 100644
--- a/drivers/rtc/rtc-mt6397.c
+++ b/drivers/rtc/rtc-mt6397.c
@@ -75,7 +75,7 @@ static int __mtk_rtc_read_time(struct mt6397_rtc *rtc,
 	tm->tm_min = data[RTC_OFFSET_MIN];
 	tm->tm_hour = data[RTC_OFFSET_HOUR];
 	tm->tm_mday = data[RTC_OFFSET_DOM];
-	tm->tm_mon = data[RTC_OFFSET_MTH];
+	tm->tm_mon = data[RTC_OFFSET_MTH] & RTC_TC_MTH_MASK;
 	tm->tm_year = data[RTC_OFFSET_YEAR];
 
 	ret = regmap_read(rtc->regmap, rtc->addr_base + RTC_TC_SEC, sec);
diff --git a/include/linux/mfd/mt6397/rtc.h b/include/linux/mfd/mt6397/rtc.h
index c3748b53bf7d..068ae1c0f0e8 100644
--- a/include/linux/mfd/mt6397/rtc.h
+++ b/include/linux/mfd/mt6397/rtc.h
@@ -36,6 +36,7 @@
 #define RTC_AL_MASK_DOW                BIT(4)
 
 #define RTC_TC_SEC             0x000a
+#define RTC_TC_MTH_MASK        0x000f
 /* Min, Hour, Dom... register offset to RTC_TC_SEC */
 #define RTC_OFFSET_SEC         0
 #define RTC_OFFSET_MIN         1
-- 
2.18.0